curl --request GET \
  --url http://localhost:3000/api/messaging/sessions

{
  "sessions": [
    {
      "sessionId": "<string>",
      "agentId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "userId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "createdAt": "2023-11-07T05:31:56Z",
      "lastActivity": "2023-11-07T05:31:56Z",
      "metadata": {},
      "expiresAt": "2023-11-07T05:31:56Z",
      "timeoutConfig": {
        "timeoutMinutes": 123,
        "autoRenew": true,
        "maxDurationMinutes": 123,
        "warningThresholdMinutes": 123
      },
      "renewalCount": 123,
      "timeRemaining": 123,
      "isNearExpiration": true
    }
  ],
  "total": 123,
  "stats": {
    "totalSessions": 123,
    "activeSessions": 123,
    "expiredSessions": 123
  }
}